Keychain Access is a macOS app that stores your passwords and account information and reduces the number of passwords you have to remember and manage.

When you access a website, email account, network server, or other password-protected item, you may be given the option to remember or save the password. If you choose to save the password, it’s saved in your keychain so you don’t have to remember or type your password every time.

How To Enable Keychain On iPhone

1. Go to Settings

2. Tap Passwords and Accounts

3. Choose iCloud

4. Choose iCloud again

5. Choose Keychain

6. Enable the toggle next to it

How To Enable Keychain On macOS

1. Click the Apple logo in the top-left corner and select System Preferences

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2. Go to Apple ID

3. Choose iCloud

4. Find the Keychain logo and tick the box next to it

Keychain Access works in collaboration with iCloud Keychain, which lets you share keychains with your other devices.